There's an AMA section of the site, but I thought this was a better place.
We (DP and I, mid-60s) have just had the most fabulous holiday of our lives in India. I'm writing this at the gate at Mumbai airport.
We had 13 nights: 5 in the Delhi/Agra/Jaipur "golden triangle", 4 in Kerala, 3 in Goa, and one (but with nearly two days to visit) in Mumbai. It was a completely custom tour put together by an Indian travel agency. We like to see lots of different things and they obliged. We could have gone slower, done half-day instead of full-day tours, etc.
We stayed in 5-star hotels (porters, swimming pool, concierge, room service, etc — some international brands like Radisson and Grand Mercure, others Indian but every bit as good), except for 2 nights in a lodge-type place in the hills of Kerala which was just as nice, and a night on a houseboat which was not quite 5* but still amazing.
We asked the agency to book us accommodation on a B&B basis as we wanted to be able to go out sometimes to find our own dinners, and also because half/full board would have meant buffets, and we don't eat enough to do them justice. But all of the monumemt entrances, guides, and drivers were included in the price, as were the internal flights that we took (we have some CO2 penance to do).
The price, excluding air tickets to and from India which we booked ourselves, was £1,900 per person for two people. We only had to pay for lunch, dinner, drinks, and tips. Had we chosen 4* hotels (typically smaller, sometimes more like B&B, but we looked at the reviews for a couple of places and they seemed fine) it would have been £1,550 per person. We were actually a bit skeptical when we got the offer because we had expected it to be quite a lot more.
India exceeded our expectations in every way, and the logistics of our trip were simply stunningly well done. I won't mention the name of the company here but I can make it available via DM. Otherwise, if you've always been curious about the idea of going but a little bit reticent (like we were, until a family member went — and spent almost twice what we did, because they used a London-based travel agent), then feel free to ask me anything. 🙏